/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package javax.servlet.http;

import java.util.EventListener;

/**
 * Objects that are bound to a session may listen to container * events
 * notifying them that sessions will be passivated and that * session will be
 * activated. A container that migrates session between VMs * or persists
 * sessions is required to notify all attributes bound to sessions *
 * implementing HttpSessionActivationListener. *
 * 
 * @since 2.3
 */

public interface HttpSessionActivationListener extends EventListener {

	/** Notification that the session is about to be passivated. */
	public void sessionWillPassivate(HttpSessionEvent se);

	/** Notification that the session has just been activated. */
	public void sessionDidActivate(HttpSessionEvent se);
}
